a watched pot never boils; time machine status and time remaining

gistfile1.txt

RUN=$(tmutil status |grep 'Running' | awk '{ print $3 }' | tr -d ";")
if [[ "$RUN" = "1" ]]
then
echo running
while true 
do
secs=$(tmutil status | grep 'TimeRemaining' |awk '{ print $3 }' | tr -d ";")
STATUS=$(tmutil status | awk '/_raw_Percent/ {print $3}' | grep -o '[0-9].[0-9]\+' | awk '{print $1*100}')
REM=$(printf '%dh:%dm:%ds\n' $(($secs/3600)) $(($secs%3600/60)) $(($secs%60))) 
echo "$STATUS% complete  $REM remaining"
sleep 60
done
else echo not running
exit 1
fi